The different compositions of AC/PPSU/PEI/PEG composite membranes are shown in Table 1.
PPSU and PEI polymers were dissolved in NMP solvent and mixedwith different ratios of AC particles (0.25, 0.5, and 1 wt.%) and with pore-formation agent PEG (6 wt.% and12 wt.%), respectively.
The polymer solutions and AC particles were mixed thoroughly by being stirred at 500 rpm, and then being heated at 60 °C for 2 h to form a homogeneous casting solution.
Subsequently, the solution was uniformly spread on a glass plate using a casting knife.
The solvent remaining in the cast film evaporated at room temperature overnight.
The casted membrane was gently immersed in a water bath for 6 h, and the water temperature was controlled at 28±2 °C to ensure complete precipitation and membrane formation.
After immersion for 6 h in the water bath, the membranes were peeled off the glass plate and subsequently rinsed with deionized water to remove residual solvent and pore-forming agent (PEG).
The finished membranes were stored in a mixture solution of deionized water/methanol (1:1) for the next filtration test.
The different compositions of AC/PPSU/PEI/PEG composite membranes are shown in Table 1.
PPSU and PEI polymers were dissolved in NMP solvent and mixedwith different ratios of AC particles (0.25, 0.5, and 1 wt.%) and with pore-formation agent PEG (6 wt.% and12 wt.%), respectively.
The polymer solutions and AC particles were mixed thoroughly by being stirred at 500 rpm, and then being heated at 60 °C for 2 h to form a homogeneous casting solution.
Subsequently, the solution was uniformly spread on a glass plate using a casting knife.
The solvent remaining in the cast film evaporated at room temperature overnight.
The casted membrane was gently immersed in a water bath for 6 h, and the water temperature was controlled at 28±2 °C to ensure complete precipitation and membrane formation.
After immersion for 6 h in the water bath, the membranes were peeled off the glass plate and subsequently rinsed with deionized water to remove residual solvent and pore-forming agent (PEG).
The finished membranes were stored in a mixture solution of deionized water/methanol (1:1) for the next filtration test.
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